ADS Environmental Services IETG FlowHawk QR 775012 A4 User Manual
Page 329
Maintenance and Troubleshooting 8-45
Problem
Modem connects but monitor does not respond.
Possible
Causes
Connection Type configuration has reverted to Serial.
3.3-volt fuse on regulator may have blown.
Possible
Solutions
Verify that the communication type is set to GPRS.
Inspect the communication cable connection between
the modem and monitor to determine if the cable is
disconnected or has been damaged.
Connect directly with the monitor using the 8000-0054
cable. Verify the monitor responds. If it does, the GSM
module might be faulty. If it does not, remove the
monitor from the hazardous area (at least 6.1 meters
away from the manhole), disconnect the battery pack,
wait at least 1 minute, and then reconnect the monitor
battery pack. If remote communication resumes, try to
connect several times to ensure communication is
reliable.
Replace the 3.3-volt yellow fuse (when replaceable) on
the regulator or return the monitor to IETG for power
regulator replacement.
Contact your regional IETG representative.